Wild storms and heavy rain this week
THE heaviest rain in at least six months will fall on NSW this week - including the Northern Rivers which is on the verge of returning to drought.
Senior Meteorologist at The Weather Channel Tom Saunders said much of northern NSW was on the brink of drought.
"Rain across nearly the entire state has been below average during the past six months but intense thunderstorms will bring heavy rain during the coming days," Mr Saunders said.
"We're expecting some good rain (on the Northern Rivers) on Saturday and Sunday - 48 hour totals of 15 to 25 mm are possible.
"Thunderstorms have already developed across the states south-west ahead of an approaching trough of low pressure, striking Griffith at around 7am.
"The trough will sweep over far western NSW this afternoon, triggering thunderstorms across most towns from Tibooburra in the north all the way to the Murray River.
Mr Saunders added that thunderstorms would also fire up along the NSW southern ranges this afternoon.
"The trough will edge east on Wednesday and Thursday and trigger further widespread thunderstorms across western and southern regions. Storms should also spread to central districts including; Wollongong, Sydney and Newcastle and have the potential to become severe, causing damaging winds, flash flooding and large hail," he said.
"On Friday the trough will move north and gradually contract thunderstorms to the north-east corner of the state ending a classic late spring storm outbreak.
"Rainfall from this weather event should exceed 20mm over most of New South Wales and should reach around 50mm across the east.
"For many regions including Newcastle, Sydney, Dubbo and Wagga Wagga, 50mm would be the heaviest rain in at least six months."